Tank - Emergency (slowed T15 P15 & bass boosted 3dB) 

Edited with Audacity 1.3
Slowed (Tempo -15 & Pitch -15)
Bass Boosted (Equalization 20,25,31,40,50,63hz at 3dB all others at 0dB)
Normalize (DC offset & Normalize amplitude at 0.0dB)